<template>
	<view>
		<!-- 搜索框区域 -->
		<view class="search-box">
			<uni-search-bar @input="input" :radius="100" cancelButton="none">
			</uni-search-bar>
		</view>

		<!-- 搜索结果列表 -->
		<view class="suggest-list" v-if="searchResult.length!==0">
			<view class="suugest-item" v-for="(item,index) in searchResult" :key="index" @click="gotoDetail(item)">
				<view class="goods-name">
					{{item.goods_name}}
				</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>

		<!-- 搜索历史的列表 -->
		<view class="history-box" v-else>
			<!-- 1.标题区域 -->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="clean"></uni-icons>
			</view>
			<!-- 2.列表区域 -->
			<view class="history-list">
				<uni-tag :text="item" v-for="(item,index) in historyList" :key="index" @click="gotoGoodsList(item)">
				</uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null, // 防抖阀
				kw: '', // 搜索框的内容
				searchResult: [], // 搜索的结果列表
				historyList: [], // 搜索的历史记录
			};
		},
		methods: {
			// input的输入事件
			input(e) {
				clearTimeout(this.timer)

				this.timer = setTimeout(() => {
					this.kw = e.trim()
					this.getSearchList()
				}, 500)
			},
			// 搜索的结果列表
			async getSearchList() {
				if (this.kw.length === 0) {
					return this.searchResult = []
				}
				const {
					data: res
				} = await uni.$http.get('/api/public/v1/goods/qsearch', {
					query: this.kw
				})
				if (res.meta.status !== 200) return uni.$showMsg()
				this.searchResult = res.message
				this.saveSearchHistory()
			},
			// 点击搜索列表跳转到详情页
			gotoDetail(item) {
				uni.navigateTo({
					url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
				})

			},
			// 存储搜索的历史记录
			saveSearchHistory() {
				this.historyList.unshift(this.kw)
				const set = new Set(this.historyList)
				this.historyList = [...set]
				// 对搜索的的历史记录进行持久化的存储
				uni.setStorageSync('kw', JSON.stringify(this.historyList))
			},
			// 清空历史记录
			clean() {
				this.historyList = []
				uni.removeStorageSync('kw')
			},
			gotoGoodsList(kw) {
				uni.navigateTo({
					url: '/subpkg/goods_list/goods_list?query=' + kw
				})
			}
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
		}
	}
</script>

<style lang="scss">
	.search-box {
		position: sticky;
		top: 0;
		z-index: 999;
	}

	.suggest-list {
		padding: 0 5px;

		.suugest-item {
			display: flex;
			align-items: center;
			justify-content: space-between;
			font-size: 12px;
			padding: 13px 0;
			border-bottom: 1px solid #efefef;

			.goods-name {
				white-space: nowrap;
				overflow: hidden;
				text-overflow: ellipsis;
			}
		}
	}

	.history-box {
		padding: 0 5px;

		.history-title {
			display: flex;
			justify-content: space-between;
			height: 40px;
			align-items: center;
			font-size: 13px;
			border: 1px solid #efefef;
		}

		.history-list {
			display: flex;
			flex-wrap: wrap;

			.uni-tag {
				margin-top: 5px;
				margin-right: 5px;
			}
		}
	}
</style>
